2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147060We extend the minimal model theorem to the 3-dimensional schemes which are projective and have semistable reduction over the spectrum of a Dedekind ring.21 pages, AMS-Tex. In the revised version, Question 5.8 is replaced by Theorem 5.8Algebraic Geometrytext